The use of the new algorithm is due to the fact that
Google obviously did not like the quality of the search results for the hottest queries related to recent events. This is a known problem for many search engines, and it is solved by the fact that the main search results include results from blog search and news search. About the same way, it was decided by Google, but only it prefers not to highlight graphically “foreign” results, but draws them in the same way as regular websites.
By “hot” English-language queries (for which there is a lot of news), news and blog posts on this topic are “mixed” in the main search results. How it looks is visible in the
screenshots .

A small
study of the algorithm conducted by SEO-optimization specialist Vyacheslav Tikhonov. He suggested that the amount of news and blog posts in the main search results depends on the importance of the topic. The more important the topic - the more relevant information.
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How Google's algorithm decides whether a request is “hot” is not clear, but it is clear that a certain amount of news and blog posts should accumulate on this keyword. As soon as the topic is no longer “hot”, search results return to normal.
Interestingly, by hot requests search results are constantly changing. So, in an hour you can get completely different results. The experiment showed that Google usually takes the first news from
Google News , as well as a number of links from
Google Blog Search blogs. For example, the site
Digg and many others get into search results through blog search.